package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // 对前端传过来的明文密码进行MD5加密处理
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        System.out.println(password);
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /*
     * 新增员工
     *
     * */
//    @Override
    public void save(EmployeeDTO employeedto) {
        System.out.println("当前用户id:"+Thread.currentThread().getId());
        Employee employee = new Employee();
        //对象属性拷贝
//                               前面是拷贝--》给到后面按顺序拷贝（名称顺序必须一样）
        BeanUtils.copyProperties(employeedto,employee);
        //设置账号的状态  1:正常 0:锁定
        employee.setStatus(StatusConstant.ENABLE);
        //设置密码
                            //先进行加密                  //引用pssword常量类 src/main/java/com/sky/constant/PasswordConstant.java
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        //设置当前记录的创建时间和修改时间
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//        //设置当前记录的创建人id和修改人id
//        // TODO 暂时固定写死 后期改为当前用户登录的id
//        employee.setCreateUser(BaseContext.getCurrentId());
//        employee.setUpdateUser(BaseContext.getCurrentId());
        /*
        * 插入员工数据
        * */
        employeeMapper.inser(employee);


    }

//   分页查询方法

    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        //select * from employee limit 1,10
        //开始分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());

        Page<Employee> page = employeeMapper.pageQuery(employeePageQueryDTO);

        long total = page.getTotal();
        List<Employee> records = page.getResult();
        return new PageResult(total,records);
    }

    /**
     * 启用禁用员工账号
     * @param status
     * @param id
     */

    @Override
    public void starOrStop(Integer status, Long id) {
//        //updata employee set status = ? where id = ?`
//        Employee employee = new Employee();
//        employee.setId(id);
//        employee.setStatus(status);
        Employee employee = Employee.builder()
                .status(status)
                .id(id)
                .build();

        employeeMapper.updata(employee);

    }

    /**
     * 根据id进行查询
     * @param id
     * @return
     */

    @Override
    public Employee getById(Long id) {
            Employee employee = employeeMapper.getById(id);
            employee.setPassword("****");
            return employee;
    }

    /**
     * 编辑员工信息
     * @param employeeDTO
     */

    @Override

    public void update(EmployeeDTO employeeDTO) {
       Employee employee = new Employee();
       BeanUtils.copyProperties(employeeDTO,employee);
//       employee.setUpdateTime(LocalDateTime.now());
//       employee.setUpdateUser(BaseContext.getCurrentId());

       employeeMapper.updata(employee);

    }
}
